Question 1

All of the following disrupt the cytoplasmic membrane except

Accepted Answer

A)  detergents.
B)  quaternary ammonium compounds.
C)  high concentration phenols.
D)  iodine.E) A) and D)
F) All of the above

Question 2

The shortest time required to kill all the microbes in a sample at a specified temperature is called the

Accepted Answer

A)  thermal death point (TDP) .
B)  thermal death time (TDT) .
C)  sporicidal time.
D)  death phase point.
E)  None of the choices is correct.F) A) and D)
G) A) and E)

Question 3

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

Accepted Answer

A) True 
 B)False

Question 4

The process of using a cleansing technique to mechanically remove and reduce microorganisms and debris to safe levels is

Accepted Answer

A)  disinfection.
B)  sterilization.
C)  antisepsis.
D)  sanitization.
E)  degermation.F) B) and E)
G) A) and D)

Question 5

_____ is a control method that removes microorganisms rather than inhibiting or killing them.

Accepted Answer

A)  Boiling
B)  Sterilization
C)  Radiation
D)  Filtration
E)  DisinfectionF) All of the above
G) B) and E)

Question 6

Dry heat

Accepted Answer

A)  is less efficient than moist heat.
B)  cannot sterilize.
C)  includes tyndallization.
D)  is used in devices called autoclaves.
E)  will sterilize at 12 ∘\circ∘ C for 15 minutes. F) B) and C)
G) C) and E)

Question 7

Soaps and detergents are very effective as sterilants.

Accepted Answer

A) True 
 B)False

Exam 9: Physical and Chemical Control of Microbes

All of the following disrupt the cytoplasmic membrane except

Correct Answer
verified

The shortest time required to kill all the microbes in a sample at a specified temperature is called the

Correct Answer
verified

The process of using a cleansing technique to mechanically remove and reduce microorganisms and debris to safe levels is

Correct Answer
verified

_____ is a control method that removes microorganisms rather than inhibiting or killing them.

Correct Answer
verified

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

Correct Answer
verified

Dry heat

Correct Answer
verified

Soaps and detergents are very effective as sterilants.

Correct Answer
verified

Exam 9: Physical and Chemical Control of Microbes

All of the following disrupt the cytoplasmic membrane except

Correct AnswerverifiedShow Answer

The shortest time required to kill all the microbes in a sample at a specified temperature is called the

Correct AnswerverifiedShow Answer

The process of using a cleansing technique to mechanically remove and reduce microorganisms and debris to safe levels is

Correct AnswerverifiedShow Answer

_____ is a control method that removes microorganisms rather than inhibiting or killing them.

Correct AnswerverifiedShow Answer

The presence of organic matter such as saliva and pus can interfere with the actions of disinfectants.

Correct AnswerverifiedShow Answer

Dry heat

Correct AnswerverifiedShow Answer

Soaps and detergents are very effective as sterilants.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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